The Institute of Acoustics and Sensor “O. M. Corbino” – CNR_IDASC has a long tradition in the development and application of NDT acoustic methods in the cultural heritage field. Since its foundation, CNR_IDASC was involved in studies regarding the acoustic quality of antique theatres the effects of vibration on works of art echographic techniques for the subsoil and underwater prospecting archaeological remains. The specific competences are mainly oriented towards the development of innovative methods for acoustic diagnostics and monitoring, but service activity is also provided by the Institute. In the last decade, the group of Physical Techniques for Cultural Heritage, operating in the Institute, implemented and patented a specific method and the relative device - ACEADD - for the determination of detachments in frescoes, mosaics and glazed ceramic tiles validating the method in laboratory tests on artificial models and by means of in situ measurements. Particular attention is focused on the implementation of packages including DIAGNOSTIC NDT METHOD – DEVICE - OPERATING PROCEDURE Acoustic Energy Absorption Diagnostic Device – ACEADD -European Patent EP B1 - US Patent US The Institute of Acoustics and Sensor “O. M. Corbino” – CNR_IDASC has a long tradition in the development and application of NDT acoustic methods in the cultural heritage field. Since its foundation, CNR_IDASC was involved in studies regarding the acoustic quality of antique theatres the effects of vibration on works of art echographic techniques for the subsoil and underwater prospecting archaeological remains. The specific competences are mainly oriented towards the development of innovative methods for acoustic diagnostics and monitoring, but service activity is also provided by the Institute. In the last decade, the group of Physical Techniques for Cultural Heritage, operating in the Institute, implemented and patented a specific method and the relative device - ACEADD - for the determination of detachments in frescoes, mosaics and glazed ceramic tiles validating the method in laboratory tests on artificial models and by means of in situ measurements. Particular attention is focused on the implementation of packages including DIAGNOSTIC NDT METHOD – DEVICE - OPERATING PROCEDURE Acoustic Energy Absorption Diagnostic Device – ACEADD -European Patent EP B1 - US Patent US ACEADD – ACOUSTIC ENERGY ABSORPTION DIAGNOSTIC DEVICE

ACEADD: ACOUSTIC ENERGY ABSORPTION ACEADD: portable device for NDT of fresco detachments based on the ACOUSTIC ENERGY ABSORPTION evaluation BACK REFLECTION SETTING BACK REFLECTION SETTING SMCOAXIAL CONFIGURATION NORMAL INCIDENCE GEOMETRY source S and receiver M in COAXIAL CONFIGURATION and NORMAL INCIDENCE GEOMETRY working distance from the surface is about 0.5m  = 1 - |H S (  )|2 measure of the abs. coeff. by the determination of the transfer function  = 1 - |H S (  )|2 DIRECT EXTRAPOLATIONh S (t) Cepstrum algorithm DIRECT EXTRAPOLATION of the surface impulse response h S (t) by means of Cepstrum algorithm signal processing SINE WAVE SWEEP wide band SINE WAVE SWEEP 100Hz ÷ 20kHz 2D3D ACOUSTIC ABSORPTION MAPSROUGHNESS MAPSLOCALIZATIONCHARACTERIZATION it provides 2D and 3D ACOUSTIC ABSORPTION MAPS and ROUGHNESS MAPS for the LOCALIZATION and CHARACTERIZATION of detachments.(1) (2) (3) (4) ACEADD – ACOUSTIC ENERGY ABSORPTION DIAGNOSTIC DEVICE

40% 60% SUPPORT ADJACENT LAYERS WITH AIR CAVITIES PLACED IN DIFFERENT POSITIONS DETACHMENT in frescoes ACOUSTIC MAPPING ON FRESCOES IN CASA VASARI FLORENCE Paola Calicchia - IDASC

30%40%50% DELAMINATION in glazed ceramic tiles ACOUSTIC MAPPING ON CERAMIC TILE PANELS IN THE RENAISSENCE CLOISTER AT THE NATIONAL TILE MUSEUM Museu Nacional do Azulejo –LISBON Paola Calicchia - IDASC